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Rhizamoeba clavarioides

 

Rhizamoeba clavarioides  (Penard, 1902) Siemensma, 1980

Diagnosis: cell in slow locomotion resembling a Clavaria mushroom; pseudopodia flattened, sharply tapering or broadly blunt; rapid monotactic form, slender; nucleus ovoid or spherical, nucleolus irregular.

Dimensions: monotactile form 70-220 µm; nucleus 9.6-15.5 µm.

Ecology: several types of water; between sediments.

Remarks: Rhizamoeba-species are usually covered with a layer of debris, which they also can leave easily to adopt a limax form for faster locomotion.

Rhizamoeba clavarioides
Rhizamoeba clavarioides, partially hidden by debris
Rhizamoeba clavarioides
Rhizamoeba clavarioides, nucleus
Rhizamoeba clavarioides
Rhizamoeba clavarioides in limax form
Rhizamoeba clavarioides
Rhizamoeba clavarioides, slow locomotion form
Rhizamoeba clavarioides
Rhizamoeba clavarioides, in transition from slow locomotion into rhizomonotactic form
Rhizamoeba clavarioides
Rhizamoeba clavarioides, hyaloplasm running back along sides
Rhizamoeba clavarioides
Rhizamoeba clavarioides, slow locomotion form
Rhizamoeba clavarioides
Rhizamoeba clavarioides
Rhizamoeba clavarioides, Crailoo (Phase Contrast)
Rhizamoeba clavarioides
Rhizamoeba clavarioides, Crailoo (Phase Contrast)
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